Is Dr. Doom stupid or what? No logical or even sane person would
think of killing 5 billion people just to conserve the environment
which would eventually be destroyed by the survivors instead.
Rather, one should talk about sending those 5 billion people,
thousands at a time, on monthly trips to a base built on the Moon,
where overpopulation would be drastically reduced on Earth because
the human species would be spread out on 2 bodies, Earth and Luna.
Now, if NASA hasn't been so slow in its actions, we would already
have a lunar base by now. Instead, I predict that a base on the
moon would be built by the year 2022, with construction beginning
in 2015-2018. Since resources on Earth are running out, it is only
logical to assume that the next body we should mine for minerals
and resources would be the moon. Instead of killing 5 billion
people, we could send a few, maybe 2/5s of that number, 2 billion,
to the Lunar Colony. From Luna, we would terraform Mars, and after
a few centuries, or even decades, Mars would be made suitable for
the rest of the 5 billion (which would have multiplayed by 3
times), to live on the desert planet. From Mars, we would be able
to gather a large pool of resources to advance next to a suitable
body in the Sol System to live in, for example, Iapetus, Ganymede,
Europa, or Enceladus (of course, after terraforming). If this plan
is taken into consideration soon, we would no longer fear
overpopulation of Terra, or even the over-use of resources on this
planet.